26. Characterization of Responsive Polymer Brushes at Solid/Liquid Interfaces by Electrochemical Impedance Spectroscopy

  1. Prof. Dr. Wolfgang Knoll2 and
  2. Prof. Dr. Rigoberto C. Advincula3
  1. Omar Azzaroni and
  2. Claudio Gervasi

Published Online: 7 JUN 2011

DOI: 10.1002/9783527638482.ch26

Functional Polymer Films: 2 Volume Set

Functional Polymer Films: 2 Volume Set

How to Cite

Azzaroni, O. and Gervasi, C. (2011) Characterization of Responsive Polymer Brushes at Solid/Liquid Interfaces by Electrochemical Impedance Spectroscopy, in Functional Polymer Films: 2 Volume Set (eds W. Knoll and R. C. Advincula), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany. doi: 10.1002/9783527638482.ch26

Editor Information

  1. 2

    AIT Austrian Institute of Technology GmbH, Donau-City-Straße 1, 1220 Vienna, Austria

  2. 3

    University of Houston, Department of Chemistry, Department of Chemical and Biomolecular Engineering, 136 Fleming Bldg., Houston, TX 77204-5003, USA

Author Information

  1. Universidad Nacional de La Plata, Instituto de Investigaciones, Fisicoquímicas TeÓoricas y, Aplicadas (INIFTA), CONICET CC 16 Suc. 4, 1900 La Plata, Argentina

Publication History

  1. Published Online: 7 JUN 2011
  2. Published Print: 20 APR 2011

ISBN Information

Print ISBN: 9783527321902

Online ISBN: 9783527638482

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Keywords:

  • polymer brushes;
  • electrochemical impedance spectroscopy;
  • thin polymer films;
  • responsive properties;
  • molecular transport

Summary

In this chapter we explore the most efficient way of applying electrochemical impedance measurements (EIS) to characterize responsive polymer brushes present at electrode/electrolyte interfaces. Interpretation of EIS data is often made in terms of electrical equivalent circuits (EECs). However, EECs are analogs not models, and hence the information that they can deliver on the physicoelectrochemical processes involved is very limited. Examples are given and discussed where a full mechanistic analysis was performed providing a more efficient interpretation or data. Within this framework, we consider that EIS may open up new opportunities to characterize the physical properties of polymer brushes as well as the dynamics of their responsive behavior.